<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="/js/vue.js"></script>
    <title>Document</title>
  </head>

  <body>
    <div id="app">
      <h3>单选</h3>
        <select v-model="fruit">
            <option disabled value="">请选择您想吃的水果</option>
            <option>苹果</option>
            <option>香蕉</option>
            <option>橘子</option>
        </select>
        <p>您想吃的水果是：{{fruit}}</p>
    </div>
    <script>
        var vm = new Vue({
         el:"#app",
          data:{ 
            fruit:""
          }
        })
      </script>
  </body>
</html>